The efficiency of LED light has been a boon for humanity, and a bane for astronomers.
How To Build A Pinhole Camera, And Why It Works
Pinhole cameras are easy to build, and great for viewing the solar eclipse.
Syzygy
What does syzygy mean in astronomy?
Millions In Motion
We can now observe the motions of millions of stars through the sky.
What We Really See
What astronomers observe, and what people think they observe are very different.
How Green Was My Meteor
Lots of objects in the night sky are green, but they are green for a variety of different reasons.
National Observatory
Kitt Peak is the oldest national observatory in America.
We Three Kings
Was the Star of Bethlehem a real astronomical event?
Phantom Time
Did the Catholic Church simply make up 300 years of early Medieval history? Astronomy clearly says no.